Case study
Adande Refrigeration (Germany)
adande.de
Every image in the library re-encoded to AVIF, with WebP behind it and the untouched original behind that. No redesign, no rebuild, and nothing deleted.
less for a visitor to download, measured across 25 pages of the live site.
The heaviest page
Averages hide the page that actually
hurts. On adande.de it is /, which went from
5.2 MB to 996 KB —
81.2% lighter. That is the page a visitor on a phone was waiting for.
Page by page
Every page, weighed as a browser loads it
HTML, stylesheets, scripts and images together — not a lab score and not a
projection. Re-runnable at any time, because the page carries both halves of its own
comparison: the AVIF a modern browser takes, and the original still sitting in the
<img> fallback inside it.
| Page | Before | Now | Lighter |
|---|---|---|---|
| Home page | 5.2 MB | 996 KB | 81% |
| 404 2 | 2.9 MB | 814 KB | 72% |
| Adande gekuhlte schubladen bei whitbread | 2.0 MB | 764 KB | 62% |
| Under counter shallow two drawer side engine vls2 series | 1.6 MB | 1.1 MB | 31% |
| Under counter two drawer rear engine vcr2 series | 1.6 MB | 1.1 MB | 31% |
| Under counter two drawer side engine vcs2 series | 1.6 MB | 1.1 MB | 31% |
| Under counter shallow one drawer side engine vls1 series | 1.6 MB | 1.1 MB | 30% |
| Under counter one drawer side engine vcs1 series | 1.6 MB | 1.1 MB | 30% |
| Produkte | 1.5 MB | 1.2 MB | 21% |
| Energieverbrauch | 1.2 MB | 735 KB | 40% |
| Worktop upstands | 1.2 MB | 988 KB | 18% |
| Fleisch eiscreme fisch schokolade | 1.1 MB | 759 KB | 36% |
| Reden wir uber die temperatur 2 | 1.1 MB | 770 KB | 30% |
| Reden wir uber die temperatur | 1.1 MB | 770 KB | 30% |
| Unsere technik | 946 KB | 768 KB | 19% |
| Unsere produkte | 920 KB | 789 KB | 14% |
| Was macht adande so besonders | 837 KB | 742 KB | 11% |
| Kurz etwas uber uns selbst | 821 KB | 761 KB | 7% |
| Conexiones frescas | 817 KB | 746 KB | 9% |
| Verkaufsvitrinen mit offenem display angetrieben von aircell | 787 KB | 760 KB | 3% |
| Reden wir ueber die temperatur 2 | 778 KB | 739 KB | 5% |
| Danke | 756 KB | 713 KB | 6% |
| Adande arbeitet harter um mehr zu schaffen | 743 KB | 730 KB | 2% |
| Hoehere kapaziaet weniger emissionen | 737 KB | 722 KB | 2% |
| Kontakt | 733 KB | 726 KB | 1% |
| Every page | 33.9 MB | 21.2 MB | 37.4% |
The images alone came down 88.3%. The whole-page figure is lower because every page also carries text, layout and code, which this work does not touch — and the whole page is what a visitor waits for, so that is the number quoted at the top. Four of these pages offer several image sizes and the browser picks one by screen width, so those rows read the first candidate rather than a guaranteed download.
What was not done
Nothing was rebuilt, and nothing was thrown away
Originals are untouched
The AVIF and WebP files sit alongside the originals, never over them. Deactivate the plugin and the site serves exactly the bytes it did before, because those bytes never moved.
No browser is left behind
Serving uses <picture>.
Anything that cannot read AVIF takes the WebP, and anything that cannot read either takes
the original. Nobody sees a broken image.
The design did not change
Same theme, same layout, same photographs at the same dimensions. Put this against a screenshot from the week before and it should be indistinguishable.
Want the same measurement on your site?
The analyser fetches your real images and re-encodes them, so the figure you get is yours, not an average.
Test your site